I tried to view my old iPhoto library, but it replaced my Photos library
Lost hundreds of pictures today!
I just wanted to view my old iPhoto library. (I upgraded to Photos from iPhoto way back in April '15) When I opened my old library today, it started to kind of re-upgrade into Photos. When Photos finally opened, it gave me this tutorial tour, even though I've had it for almost a year. The problem is that all of my photos from last April till now have been deleted!!! I have no earthly clue why, or how to fix it.
Please help 😢
MacBook Pro (Retina, 13-inch, Late 2013), OS X El Capitan (10.11.3)